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(No Model.) 4 Sheets-Sheet 1.

H. TENTING.

VALVE APPARATUS FOR STEAM ENGINES AND PUMPS. I No. 309,418., PatentedDec. 16, 1884. fin raw rFn w um um W722 ewes five/2 for (No Model.)4Sheets-$1ieet 2.

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VALVE APPARATUS FOR STEAM ENGINES AND PUMPS. No. 309,418. Patented Deep16, 1884.

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(NA Model.) 4 Sheets-Sheet'tS.

H. TENTING.

VALVE APPARATUS FOR STEAM ENGINES AND PUMPS. No. 309,418. Batenfced Dec.'16, 1884.

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VALVE APPARATUS FOR STEAM ENGINES AND PUMPS.

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HENRI TENTING, OF, PARIS, F 'tANOE.

."JIPEJCIFICATIQN forming part of Letters Patent No. 309,418, datedDecember 16, 1884.

Application fill-d June 4, 1994.

To (ZZZ whom, it may concern.-

Be it known that I, HENRI TENlING.Z1Citizen of 1h'ance,'residing atParis, in the de partment of the Seine, have invented new and usefulImprovements in Valve Apparatus for Steam-Engines, Pumps, and thelike,of which the following is a specification.

This invention relates more particularly to steamengines, pumps forwater and gas, and like machines which have steam or fluid pas sages inthe piston, and in which the latter is given an axial movement ofvibration in addition to the ordinary reciprocation, such axial movementoperating to change the ports so as to admit the fluid alternately toopposite ends of the cylinder.

The invention consists in placing the valveports outside the cylinderinstead of having them inside, as heretofore. The rubbing-surfaces ofthe piston and cylinder thus are or may be unbroken, and the valveseatis more accessible.

It also consists in certain special constructions, combinations, andarrangements of parts, as hereinafter set forth.

The accompanying drawings represent a steanrengine embodyingtheinvention in what is considered the best form.

Figure 1 is a plan; Fig. 2, an end elevation; Fig. 3, a front elevation,partlyin section; Fig. 4., a vertical. crosssection on line :r 7 Fig. 3,and Fig. 5 a detail view.

The cylinder 1 in the two ends of the frame, and the valve apparatus andcrank mechanism are in the chamber in the middle. The pistoirlnmds l)are connected together at the back (see Fig. 4) by aseginentalconnection, in a, so that the two heads move and. turn together. Thisconnection is slotted, and in the slot is the cam K, which is fixed onthe cross-shaft As the shaft revolves the cam, acting on the surface atand a, turn the piston first in one direction and then in the other. Inthe piston-heads and the lower part, a, of the segmental connection arethe steam-pas sages O O, which open at one end into the steam-spaces V'V, respectively, and at the opposite end are closed. The valve-ports cc, of oblong form, are in the side of the steampassages. A is theinlet-port; 13 B, exhaustports of the valve-seat. The port A is at the(No modvl.)

end of the steam-passage S, the ports B B of the passage T. In front ofthe segmental pis ton-connection is the plate F, which abuts at the endsagainst the inner face of the pistonheads, but does not turn with them.This plate, therefore, partakes of the usual reciprocatory movement ofthe piston in a right line, but is not vibrated. At the middle it isslotted, the shaft J passing through the slot 0. It is provided in thefront face with ways G, in which moves the slide H. The ways are partlyabove and partly below the slot. The slide is connected, by thewrist-pin i, with erank-pin I fixed on the shaft J. It is of such lengththat when the crank is vertical or nearly vertical it is wholly on oneside of the slot. It is therefore carried by the revolution of thewrist-pin first over, then under, the shaft. In this way the necessityof dividing the shaft is avoided. The segmental connec tion or valve inn is held to its seat by the springs r r. These are flat leaf-springs,(see Fig. 5,) which at the ends are held in sockets of the plate F, andat the middle bear upon the conical ends w w of thescrews W and V,tapped into the piston-heads at the axis thereof. By turning thesescrews the points 0on1 press the springs and cause them to press thepiston toward the side of the valve-seat with greater pressure. Beingaxial, the screws do not interfere with the vibratory movement of thepiston. The operation is as follows: Steam enters b the passages S inthe engine-frame, and passes by way of the ports A c and steanrpassage Ginto the space V at the right end of the cylinder, between the pistonand the cylinder-head Q, and forces the piston to the left in thedirection ofthe arrow U. The plate F and slide l'ij are carried with thepiston and turn the crank I and shaft J to the left in the direction ofthe arrow Z. In its revolution the shaft J has, through the cam K,turned the piston to the left, as indicated by the arrow, Fig. 4,thereby putting the steam-passages S 0 into communication through thesteam-ports A c. The exhauststeani from the space V, between thepistonand the cylinder-head Q, escapes through the passage 0, ports 0 B, andexhaust-passage T. By the continued revolution the cam K, acting uponthe surface of the IOO port m, turns the piston to the right, (oppositeto arrow, Fig. 4,) so as to cut off the steam, and then, continuing toturn it to the right, brings the port 0 opposite the port A, and letsthe steam into the space V, so as to impel the piston in the oppositedirection.

It may be remarked that the usual accessories of a steam-engine-such asthe regulator,

fly-wheel, &c.'may be used; also that the invention is equallyapplicable to various kinds of engines, whether with one or with severalcylinders, or to compound engines, for example.

In applying the invention to water-pumps, the shaft J being driven froma suitable motor, the passage S is the inlet and T the outlet, and theordinary appliances of checkvalves and the like may be used.

It is evident that modifications may be made in the details ofconstruction without departing from the spirit of the invention, andthat parts of the invention may be used separately. Thus the forms,dimensions, proportions, and materials. aswell as the arrangement ofparts may be changed, and the movements may be transmitted from or tothe piston by devices of various kinds.

Having now fully described my said invention and the manner of carryingthe same into effect,.what I claim is 1. The reciprocatory and vibratorypiston, provided with passages and ports, in combination with thecylinder and the valve-seat, and its ports arranged outside saidcylinder, substantially as described.

2. The combination, with the cylinder, formed in the two ends of themachineframe, of the reciprocatory and vibratory piston, composed of thepiston-heads and segmental connection, and provided with passages andports, and the valve-seat opposite the segmental connection,substantially as described.

3. The combination, with the cylinder, the

piston provided with passages and ports, and the valveseat, of thecross-shaft, the crankconnection between the shaft and piston, and thecam mounted on said shaft for vibrating said-piston, substantially asdescribed. 4. The combination, with the cylinder and piston, having atransverse slot in the middle, the shaft passing through said slot, theconnections between the shaft and piston, and the valve apparatus foradmitting the fluid alternately into spaces between the piston andcylinderheadson opposite sides of the slotted portion, substantially asdescribed.

5. The combination ofthe slotted plate, the shaft passing through theslot, the ways on each side of said slot, the slide moving in said waysand crossing from one side to the other of said slot, the crank on theshaft, and the wrist-pin connecting the crank with the slide,substantially as described. c

6. The combination of the cylinder, piston valve formed by said piston,cross-shaft, slotted plate provided with ways, slide moving in saidways, crank and wrist-pin connected with said slide, and cam forimparting an axial movement of vibration to said piston, substan tiallyas described.

In testimony whereof lhave hereunto set my hand in the presence of twosubscribing witnesses.

HENRI TENTING.

Witnesses:

' EMILE BARRAULT,

AUG. ViNcK.

